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110 lines
4.4 KiB
Clojure
110 lines
4.4 KiB
Clojure
;; This Source Code Form is subject to the terms of the Mozilla Public
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;; License, v. 2.0. If a copy of the MPL was not distributed with this
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;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
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;;
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;; Copyright (c) KALEIDOS INC
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(ns app.render-wasm.api.texts
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(:require
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[app.render-wasm.api.fonts :as f]
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[app.render-wasm.helpers :as h]
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[app.render-wasm.mem :as mem]
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[app.render-wasm.serializers :as sr]
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[app.render-wasm.wasm :as wasm]))
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(defn utf8->buffer [text]
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(let [encoder (js/TextEncoder.)]
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(.encode encoder text)))
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(defn write-shape-text
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;; buffer has the following format:
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;; [<num-leaves> <paragraph_attributes> <leaves_attributes> <text>]
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[leaves paragraph text]
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(let [num-leaves (count leaves)
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paragraph-attr-size 48
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leaf-attr-size 52
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metadata-size (+ 1 paragraph-attr-size (* num-leaves leaf-attr-size))
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text-buffer (utf8->buffer text)
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text-size (.-byteLength text-buffer)
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buffer (js/ArrayBuffer. (+ metadata-size text-size))
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dview (js/DataView. buffer)]
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(.setUint32 dview 0 num-leaves)
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;; Serialize paragraph attributes
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(let [text-align (sr/serialize-text-align (:text-align paragraph))
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text-direction (sr/serialize-text-direction (:text-direction paragraph))
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text-decoration (sr/serialize-text-decoration (:text-decoration paragraph))
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text-transform (sr/serialize-text-transform (:text-transform paragraph))
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line-height (:line-height paragraph)
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letter-spacing (:letter-spacing paragraph)
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typography-ref-file (sr/serialize-uuid (:typography-ref-file paragraph))
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typography-ref-id (sr/serialize-uuid (:typography-ref-id paragraph))]
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(.setUint8 dview 4 text-align)
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(.setUint8 dview 5 text-direction)
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(.setUint8 dview 6 text-decoration)
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(.setUint8 dview 7 text-transform)
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(.setFloat32 dview 8 line-height)
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(.setFloat32 dview 12 letter-spacing)
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(.setUint32 dview 16 (aget typography-ref-file 0))
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(.setUint32 dview 20 (aget typography-ref-file 1))
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(.setUint32 dview 24 (aget typography-ref-file 2))
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(.setInt32 dview 28 (aget typography-ref-file 3))
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(.setUint32 dview 32 (aget typography-ref-id 0))
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(.setUint32 dview 36 (aget typography-ref-id 1))
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(.setUint32 dview 40 (aget typography-ref-id 2))
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(.setInt32 dview 44 (aget typography-ref-id 3)))
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;; Serialize leaves attributes
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(loop [index 0 offset (+ 1 paragraph-attr-size)]
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(when (< index num-leaves)
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(let [leaf (nth leaves index)
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font-style (f/serialize-font-style (:font-style leaf))
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font-size (:font-size leaf)
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font-weight (:font-weight leaf)
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font-id (f/serialize-font-id (:font-id leaf))
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font-family (hash (:font-family leaf))
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font-variant-id (sr/serialize-uuid (:font-variant-id leaf))
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text-buffer (utf8->buffer (:text leaf))
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text-length (.-byteLength text-buffer)]
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(.setUint8 dview offset font-style)
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(.setFloat32 dview (+ offset 4) font-size)
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(.setUint32 dview (+ offset 8) font-weight)
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(.setUint32 dview (+ offset 12) (aget font-id 0))
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(.setUint32 dview (+ offset 16) (aget font-id 1))
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(.setUint32 dview (+ offset 20) (aget font-id 2))
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(.setInt32 dview (+ offset 24) (aget font-id 3))
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(.setInt32 dview (+ offset 28) font-family)
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(.setUint32 dview (+ offset 32) (aget font-variant-id 0))
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(.setUint32 dview (+ offset 36) (aget font-variant-id 1))
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(.setUint32 dview (+ offset 40) (aget font-variant-id 2))
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(.setInt32 dview (+ offset 44) (aget font-variant-id 3))
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(.setInt32 dview (+ offset 48) text-length)
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(recur (inc index) (+ offset leaf-attr-size)))))
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;; Add text content to buffer
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(let [text-offset metadata-size
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buffer-u8 (js/Uint8Array. buffer)]
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(.set buffer-u8 (js/Uint8Array. text-buffer) text-offset))
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;; Allocate memory and set buffer
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(let [total-size (.-byteLength buffer)
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metadata-offset (mem/alloc-bytes total-size)
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heap (mem/get-heap-u8)]
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(.set heap (js/Uint8Array. buffer) metadata-offset)))
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(h/call wasm/internal-module "_set_shape_text_content"))
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(def emoji-pattern #"[\uD83C-\uDBFF][\uDC00-\uDFFF]")
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(defn contains-emoji? [s]
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(boolean (re-find emoji-pattern s)))
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